NECTA SPA TECHNICAL MANUAL “COLIBRÌ”
Service Manual: Colibrì
Edition 02-2002
9 /25
MACHINE CONTROL BOARD CONFIGURATION
Three electronic boards are installed.
1) The CPU
control
board, located at the back of the machine, processes the information from the push-
buttons, the payment system and from the sensors installed throughout the machine; it also controls the
actuations and the push-button board. It is built on SMT technology.
NB:
SMT
= acronym for:
S
urface Mount Technology (some electronic components that are smaller than the
standard which can be surface mounted, takes little space, works with precision and reduced problems from
electromagnetic disturbance.
2) The
push-button
board, located on the inside of the door, controls the alphanumeric display and it
processes the push-button commands; it also supports the coin mechanism connectors and the RS232
printer port.
3) The
display
board processes the information and converts it into readable signals.
The board power (
15 VAC
) is supplied through the transformer, which is protected with two fuses:
125 mA T
on the primary winding
1.25 mA T
on the secondary winding
The CONTROL BOARD is also fitted with three coloured LEDs to indicate the different functions.
GREEN
LED
N. 5: it blinks during normal operation and indicates that the microprocessor functions correctly.
YELLOW
LED N.10: it glows when there is a 12 V DC power supply to the board
RED
LED
N. 12: it glows when the boiler heating element starts
NOTE
The board also controls the payment system; however, as standard feature only a parallel type communication
system is controlled.
Three separate cards to be inserted into connector N. 8 are available, controlling the payment system protocols,
and namely: Executive - MDB - BDV
These cards are available as “optional” features, assuming that for the specific range of the Colibrì vending
machine normally a parallel communication system with front validators is used.
Wiring connection diagram for payment systems with the different protocols
